Designing cover images for WeChat Official Accounts? Gudong Cover has you covered.
1. The Origin
A few days ago, I wrote an article about how I use AI to generate cover images.
All my WeChat cover images are AI-generated, but I let the AI generate HTML code. I have my own set of prompts, so all my cover images share a consistent style.
Later, people often asked me how I made these cover images.
I thought about sharing my prompts. But I discovered that wouldn't work with DeepSeek. The prompts only work in IDE tools like Trae or Claude Code. For most non-technical users, that's too high a barrier.
2. The Solution
Then I had an idea: I could build a web app specifically for generating cover images for WeChat Official Accounts and Xiaohongshu (Little Red Book).
I just needed to bake those prompts into the app, letting AI generate HTML-formatted cover images based on the prompts.
This way, ordinary users could use it directly, solving the problem of needing IDE or programming tools.
That morning, I quickly developed this web app using AI Studio.
3. Try It Online
Open the webpage, enter your article title or content, click generate, and you're done.
The interface is simple. On the left is an input box for your article content or title.
Once you enter your content or title and click generate, AI automatically extracts key information and generates a cover image in a specific style based on the prompt settings—what text to display, what background to use, and so on.
For many non-technical users who write for WeChat, you can completely use this tool to design cover images. I've also provided a download button—just click to download, or take a screenshot.
4. Dual Mode Support
Gudong Cover supports two modes, optimized for different platforms:
WeChat Mode (2.35:1)
Landscape ratio, minimalist dark style. Perfect for technical articles, deep insights, and knowledge-sharing content. Eye-catching in the WeChat feed without being flashy.
Xiaohongshu Mode (3:4)
Portrait ratio, high-saturation colors, bold headline style. Better suited for mobile browsing, emphasizing emotional appeal and visual impact. Great for recommendations and experience-sharing content.
5. Open Source & Free
This tool is open source and free to use.
💻 Source Code: https://github.com/maoruibin/GudongCover
Currently, the site uses my own Gemini and DeepSeek API keys. I don't expect too many users, so I'm providing free quota for now.
Users both domestic and international can use it. I also support custom API keys—if you have your own API key, you can configure it.
Technical Highlights:
- Powered by: Gemini 3 Flash
- Generation speed: < 2 seconds
- One-click export to high-resolution PNG
I welcome everyone to try it and recommend it to others who might need it—friends who run WeChat accounts, friends who create content on Xiaohongshu.
If you have any feedback, please let me know. I'll continue to improve it.
6. Future Plans
My WeChat articles are all formatted using WeiMD, so I've integrated Gudong Cover directly into my WeChat formatting tool.
Now when formatting WeChat articles, you can send the article to Gudong Cover to generate a cover image, making the entire workflow much smoother.
That's the story of Gudong Cover. Thanks to AI for making this possible.
I'm Gudong. Good tools deserve to be seen by more people.
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